KMS Page-Flipping Ioctl Ready For Linux 2.6.32
Written by Michael Larabel in Linux Kernel on 17 August 2009 at 02:45 PM EDT. 5 Comments
Kristian Høgsberg has announced that the work he and Jesse Barnes, Jakob Bornecrantz, and Chris Wilson have been working on for the past few months is now ready for prime-time action. This work is the mode-setting page-flip ioctl for the kernel DRM. What this work basically leads to is tear-free updating of the screen with low-latency page-flipping.

Currently this code should work with both the Intel and ATI kernel mode-setting and is ready to enter the mainline Linux 2.6.32 kernel once the merge window opens. The mailing list message announcing this work along with the several hundred line DRM patch can be found on the dri-devel list.

Now that this work is out of the way, Kristian is planning to work on an Eagle+KMS back-end for Clutter, which will allow Clutter programs to run directly from a KMS frame-buffer. After that, a Wayland compositor for the Clutter tool-kit is on his agenda. This work is discussed here.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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